Spark-arrester for smoke-stacks.



E. E.,ELLSWORTH. SPARK ARRES'EERFQR SMOKE STACKS. APPLICATION FILED MAY25; 1911.

1,028,449. I I Patented June 4, 1912.

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ATNT OFFICE.

ELMER E. ELLSWORTH, 0F IPOJEtTL AND, OREGON, ASSIGNOR TO ELLSWORTI-ISPARK ARRESTER COMPANY, A CORPORATION OF OREGON.

Specification of Letters Patent.

Patented June 4, 1912.

Application filed May 25, 1911. Serial No. 629,323.

To all whom it may concern: v

Be it known that I, ELMER' E. ELLswoR'rH, a citizen of the UnitedStates, residing at Portland, in the county of Multnomah and State ofOregon, have invented certain new and useful Improvements inSpark-Arresters for Smoke-Stacks; and I do declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to improvements in spark arresters for smokestacks.

One object of the invention is to provide a spark arrester adapted tobeapplied to the stacks of loco-motives, traction engines or the like orto any other form of stack whereby the sparks and cinders passingthrough the stack will be caught and retained and which will notinterfere with the draft for the free passage of smoke and steam fromthe stack.

Another object is to provide an improved means whereby the accumulatedsparks and cinders caught by the arrester may be readily removed.

With these and other objects in view the invention consists of certainnovel features of construction, combination and arrangement of parts aswill be more fully described and particularly pointed out in theappended claim.

In the accompanying drawings: Figure 1 is a side view of a smoke stackshowing the application of the invention; Fig. 2 is a central verticalsection of the same; Fig. 3 is a cross section on the line 3-3 of Fig.2; Fig. l is a similar view on the line 22 of Fig. 2; Fig. 5 is a sideview of the upper end of a stack showing a vertical sectional view of amodified form of the-invention.

My improved spark arrester is herein shown as being applied to alocomotive smoke stack and said arrester comprises an outer orcylindrical section 1 in the form of a wire netting band the meshes ofwhich are of such size as to prevent the passage of sparks or cinders.The section or band 1 is reinforced at its upper and lower edges byannular metal bands or rings'2 which are secured to the wire netting inany suitable manner. Arranged within the outer section 1 is an innersection 3 comprising an inner netting band 4: having reinforcing rings 5secured to its upper and lower edges as shown. The band 5 is adapted tofit upon the extreme upper end of the stack while the outer band orsection 1 which is spaced a suitable distance from the inner section isadapted to rest on the upper surface of the funnel of the stack to whichsaid outer section is secured in any suitable manner.

Arranged over the upper end of the stack 1 and spaced a suitabledistance therefrom and from the inner band 4: is a cap 6 formed of wirenetting and having secured to the inner surface of its side walls anannular reinforcing ring. or band 7. To the band or ring 7 and upperring 5 of the inner band 4L are secured supporting brackets or plates 8which support the cap 6 and space the same a suitable distance from theband t and upper end of the stack.

Connected to the outer section 1 are a series of spark or cinderconducting pipes 9, said pipes having flared upper ends and inwardlyextending lower ends to the extremities of which are secured closingcaps 10 whereby the cinders and sparks caught or collected by the pipeswill be confined in the lower portions of the latter and may be removedtherefrom when desired by removing said caps 10.

In Fig. 5 of the drawings is shown a slightly modified construction ofthe spark arrester which is particularly adapted for use where coal isused for fuel. In the form of the invention shown in Fig. 5 the cap 11has its upper side in the form of a solid metal plate 12, said cap 11otherwise corresponding to the cap 6 shown in Fig. 2 of the drawingswhich latter form of the cap is especially adapted for use when Wood isemployed for fuel.

By constructing and arranging my improved arrester as herein shown anddescribed it will be seen that the sparks and cinders passing throughthe stack will strike against the caps 6 or 11 and will be deflectedback into the stack or between the cap and the inner band 5 and willfall onto the funnel or upper end of the stack within the outer section1 and will be discharged therefrom into the pipes 9 from which they maybe removed in the manner described. By constructing the deflector ofwire netting of the proper mesh, the smoke and steam will be'permittedto readily pass from the stack and the draft through the latter W111 notbesim aired while n1 daii tbrtirely'fob'viated As clearly shown, theenlarged receiving fires resulting from the discharge' of live sparksand; Cinders from the stack is enends of the pipes 7 are positionedabove-the lower edge or ring 2 of the cylindrical sec tion 1, forming anannular spark and cinder retaining space above the receiving ends of thepipes, whereby after the arrester has been in use for a short time,sparks and cinders will primarily fill'thespace between the lower edgeof the hood, forming a non-conducting'connection between the inclinedtop of the stack, the latter properly directing the sparks and cindersto the pipes after the annular receiving space has been filled.

From the foregoing-description taken in connection with the accompanyingdrawings, the construction and operation of the invention will bereadilynnderstood without requiring a more extended explanation.

Various changes in the form, proportionand the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages Copies of this patent may beiohtainedfor of the invention as defined in the appended claim. i

Having Ivclaim isf l W The combination with agsmoke stack having. aconically. converg n drical screenfcl'arnpe'dfto the top of said stack,areinfo'rcing ring around the top of said cylindrical screen, a secondring concentricwith. and spaced" around said first ring, bracketsconnecting the rings and sup porting the outer one, a screen capsupported at its lower portion by said outer ring in spaced relation tothe stack and inner screen, an outer screen band provided withreinforcing rings at top 'andfbottome surrounding and spaced from saidcap and rest: ing on the inclined top ofthe stack, and pipes fordisposing of the sparks caught. In testimony whereof I have hereunto setmy hand in presence of two subscribing Witnesses. I

ELMER E. ELLSWQRTH, Witnesses:

H. N. ALDRICH, BERT W. BEATTY.

five cents each, by addressing the Commissio r p t s Washington, D. 0. Vy

thus described" my invention, what s top, of a cylin-

